com.dangdang.ddframe.rdb.transaction.soft.api.config.SoftTransactionConfiguration Maven / Gradle / Ivy
/*
* Copyright 1999-2015 dangdang.com.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.dangdang.ddframe.rdb.transaction.soft.api.config;
import com.dangdang.ddframe.rdb.sharding.jdbc.core.datasource.ShardingDataSource;
import com.dangdang.ddframe.rdb.sharding.constant.SQLType;
import com.dangdang.ddframe.rdb.transaction.soft.constants.TransactionLogDataSourceType;
import com.dangdang.ddframe.rdb.transaction.soft.datasource.TransactionLogDataSource;
import com.dangdang.ddframe.rdb.transaction.soft.datasource.impl.MemoryTransactionLogDataSource;
import com.dangdang.ddframe.rdb.transaction.soft.datasource.impl.RdbTransactionLogDataSource;
import com.google.common.base.Optional;
import lombok.AccessLevel;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import static com.dangdang.ddframe.rdb.transaction.soft.constants.TransactionLogDataSourceType.RDB;
/**
* 柔性事务配置对象.
*
* @author zhangliang
*/
@RequiredArgsConstructor
@Getter
@Setter
public class SoftTransactionConfiguration {
/**
* 事务管理器管理的数据源.
*/
@Getter(AccessLevel.NONE)
private final DataSource targetDataSource;
/**
* 同步的事务送达的最大尝试次数.
*/
private int syncMaxDeliveryTryTimes = 3;
/**
* 事务日志存储类型.
*/
private TransactionLogDataSourceType storageType = RDB;
/**
* 存储事务日志的数据源.
*/
private DataSource transactionLogDataSource;
/**
* 内嵌的最大努力送达型异步作业配置对象.
*/
private Optional bestEffortsDeliveryJobConfiguration = Optional.absent();
/**
* 获取事务管理器管理的数据库连接.
*
* @param dataSourceName 数据源名称
* @return 事务管理器管理的数据库连接
*/
public Connection getTargetConnection(final String dataSourceName) throws SQLException {
if (!(targetDataSource instanceof ShardingDataSource)) {
return targetDataSource.getConnection();
}
return ((ShardingDataSource) targetDataSource).getConnection().getConnection(dataSourceName, SQLType.DQL);
}
/**
* 构建事务日志事务源.
*
* @return 存储事务日志的数据源
*/
public TransactionLogDataSource buildTransactionLogDataSource() {
TransactionLogDataSource result;
switch (storageType) {
case MEMORY:
result = new MemoryTransactionLogDataSource();
break;
case RDB:
result = new RdbTransactionLogDataSource(transactionLogDataSource);
break;
default:
throw new UnsupportedOperationException();
}
return result;
}
}